NHC MOTORS / Cases / AMG GT Black Series

MERCEDES-AMG · PREVENTIVE MAINTENANCE

AMG GT Black Series maintenance
Fluid service and wheel alignment

The AMG GT Black Series stood at the top of the AMG GT range at its launch. Within Mercedes-AMG, the Black Series name identifies special models that concentrate the brand’s motorsport technology. An exceptionally rare sight in Korea, this car came to NHC for maintenance.

Its 730 PS V8 and aerodynamics derived from the GT3 race car were developed with circuit driving in mind. Careful routine maintenance helps preserve that capability. This visit covered engine oil, differential oil and brake-fluid replacement, followed by wheel-alignment adjustment.

Mercedes-AMG’s Black Series introduction

Inspecting the wheel and body of the AMG GT Black Series.
Inspecting the wheel and body of the AMG GT Black Series.
Mercedes-AMG GT Black SeriesWorkshop record: Oct 2025한국어Published 11 Sep 2026
EngineEngine oil
DrivelineDifferential oil
BrakesBrake fluid
ChassisWheel alignment

01

Four maintenance items in one visit

Engine oil, differential oil and brake fluid each maintain a different vehicle system. Wheel alignment was added so wheel direction could be checked during the same visit.

The work included draining the engine oil and replacing its filter, changing the rear-differential fluid, replacing brake fluid, and then measuring and adjusting toe.

AMG GT Black Series engine oil, differential oil, brake fluid and wheel-alignment service.
AMG GT Black Series engine oil, differential oil, brake fluid and wheel-alignment service.

02

Fluids were serviced at their respective systems

This engine uses dry-sump lubrication, storing oil in a separate tank to maintain oil supply during hard cornering. An oil change therefore starts with identifying the reservoir and drain points. We drained the oil with this layout in mind and replaced the filter as part of the service.

Mercedes-Benz dry-sump components

Engine oil drained for inspection during the service.
Engine oil drained for inspection during the service.
Engine-oil filter checked during replacement.
Engine-oil filter checked during replacement.

The rear differential uses fluid separate from the engine. Its service points were identified, and drained and fresh fluid were kept apart for inspection.

Identifying the rear-differential service point.
Identifying the rear-differential service point.
Drained and fresh fluid kept separate for inspection.
Drained and fresh fluid kept separate for inspection.

03

Brake-fluid replacement with the wheels removed

Brake fluid absorbs moisture over time, lowering its boiling point. That matters when braking generates heat, even on a car with low mileage. A familiar pedal feel alone is not a reason to postpone service: the maintenance history and manufacturer’s replacement interval should also be checked.

With the wheels removed, the existing brake fluid was drained and replaced. The calipers, hoses and work areas were checked as the service progressed at each wheel.

Brembo brake-fluid maintenance guidance

Brake-fluid replacement with the wheel removed.
Brake-fluid replacement with the wheel removed.
Draining the existing fluid from the brake system.
Draining the existing fluid from the brake system.

04

Front and rear toe adjustment

Before adjustment, front toe measured 1.5mm left and 2.4mm right. Both values were in the machine's green range, but the sides differed by 0.9mm.

“With the special parts, camber can be adjusted.”

After adjustment, front toe measured 1.7mm on both sides. Dedicated parts allow further camber adjustment, but we judged that adding those parts was not warranted during this visit and left camber unchanged.

Rear toe changed from 0.3mm left and 0.4mm right to 1.0mm and 1.1mm. The recorded screens show rear total toe changing from 0.7mm to 2.1mm.

Four wheels, before and after

Before

Front left–right toe difference0.9mm

FRONT ↑Front left+1.5mmFront right+2.4mmRear left+0.3mmRear right+0.4mm

Front difference 0.9mm · rear total toe 0.7mm

After

Front left–right toe difference0.0mm

FRONT ↑Front left+1.7mmFront right+1.7mmRear left+1.0mmRear right+1.1mm

Front difference 0.0mm · rear total toe 2.1mm

Measured toe values from the same car. Wheel angles are exaggerated on the same scale before and after. Positive toe points the front of the wheels inward; negative toe points them outward.
Front toe before adjustment: 1.5mm left and 2.4mm right.
Front toe before adjustment: 1.5mm left and 2.4mm right.
Front toe after adjustment: 1.7mm left and 1.7mm right.
Front toe after adjustment: 1.7mm left and 1.7mm right.

Readings shown on the front and rear measurement screens

MeasurementLeftRight
Front camber−2.33°−2.26°
Front caster11.38°11.15°
Rear camber−2.03°−1.81°
Rear toe1.0mm1.1mm

Camber was not adjusted, and the rear camber-difference indicator remains highlighted on the screen. The diagram and table use the recorded measurement screens. Rear total toe is shown as 2.1mm on screen; the spoken explanation gives 2.0mm.

05

Fluid service and alignment completed

Engine oil and filter, differential oil and brake fluid were replaced. During alignment, the front-toe difference was matched left to right and camber was left in its existing position.

Engine oilDrained and replaced; filter checked
Differential oilRear-differential fluid replaced
Brake fluidExisting fluid drained and replaced at each wheel
Wheel alignmentFront toe 1.5/2.4mm → 1.7/1.7mm; no additional camber adjustment

06

Workshop video

Watch on YouTube ↗

07

AMG maintenance: questions and answers

What maintenance was carried out on this AMG GT Black Series?

Engine oil, differential oil and brake fluid were replaced, and the wheel alignment was adjusted.

What was adjusted during alignment?

Front toe was adjusted from 1.5mm left and 2.4mm right to 1.7mm on both sides. Both starting values were in the machine's green range, so this is a left-right matching adjustment rather than a failed-to-passed claim. Camber was left unchanged.

Can fluids and alignment be serviced in one visit?

We first organise the work around the car's history and current condition. This vehicle received engine oil, differential oil and brake-fluid replacement together with wheel-alignment adjustment during the same maintenance visit.

What information should I provide when booking?

Share the model, current mileage, recent maintenance history and the conditions in which any concern occurs. We can then outline the inspection scope and required service items.

NHC MOTORS · SUWON

We will organise
the maintenance your car needs now.

We will review the condition and service history to identify the maintenance needed. If you have noticed a symptom, diagnosis comes first. Tell us the model and recent work.

524 Maesonggosaek-ro, Gwonseon-gu, Suwon · By appointment

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